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Please tell me how to burn a FAT32 CD under Snow Leopard (10.6.8). I have tried multiple approaches, including creating a FAT32 .dmg properly sized for the disc, and burning from the Finder or from Disk Utility. The thread at How to burn Windows compatible CD on Mac OS X Mountain Lion did not help me.

The image correctly shows up as type FAT32 in Disk Utility, but the resulting disc invariably shows up as type Mac OS Extended. I am trying to do this because some Windows users are reporting not seeing anything on the disc I sent them. It was my understanding that the Mac automatically creates CDs that can be read by both OS X and Windows.

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  • How does the thread not help you? – mmmmmm Sep 18 '14 at 15:05
  • Mark, I tried what the thread says to do but I still end up with type Mac OS Extended. – Neil Steiner Sep 18 '14 at 18:22
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You cannot make a FAT32 CD. Windows does not use that format for CD/DVDs.

Normally, when burning a bunch of files, both Mac and Windows use ISO 9660 (Joliet) for CDs and Universal Disk Format (UDF) for DVD media. Format is automatically chosen once media is detected.

Also there is no need to make an image first. You just

  • select the files in Finder
  • right click on the selected files
  • select Burn.
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  • It appears that Disk Utility reports CDs as format Mac OS Extended no matter how or where they were burned. I find that rather confusing. – Neil Steiner Sep 20 '14 at 1:00
  • It doesn't on my 10.6.8 - It clearly says Format: ISO 9960. Something is seriously messed up on your system! – Vic Sep 20 '14 at 6:07

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